| http://www.w3.org/ns/prov#value | - contaminate that exceeds a predetermined limit; ii) a breakage mechanism, the breakage mechanism being adapted to break the barrier to expose the ambient air inside the home to the outside of the home; iii) an air circulator, the air circulator including a blower for reducing the level of contaminated ambient air; iv) a shut-off device adapted to termination operation of an appliance; and v) a pro
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